I have a Sharepoint site with lots of Document Libraries. I have configured Rights Management on those libraries, however I'm under a problem. I have full control permissions within all the libraries (In fact I'm the farm's admin), but when I try to open a XPS file (just this specific file out of about 400 XPS files, 1 per library) It throws me the following error:

I'm not sure if it's a configuration error, because: If I uncheck the "Users must verify their credentials every 30 days" option in SharePoint configuration, I can see the document but, when I check it back again It throws the same error.
I verified I have Full control permissions in the document, and the strange thing is that it only happens with this file.
Can you please help me with some ideas?
Thanks in advance
<img ...>stuff into the markdown -- it also provides long-term image hosting! – sarnold Oct 24 '11 at 23:25